205348547641 has 2 divisors, whose sum is σ = 205348547642. Its totient is φ = 205348547640.

The previous prime is 205348547633. The next prime is 205348547741. The reversal of 205348547641 is 146745843502.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 176543669241 + 28804878400 = 420171^2 + 169720^2 .

It is a cyclic number.

It is not a de Polignac number, because 205348547641 - 2³ = 205348547633 is a prime.

It is not a weakly prime, because it can be changed into another prime (205348547611) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 102674273820 + 102674273821.

It is an arithmetic number, because the mean of its divisors is an integer number (102674273821).

Almost surely, 2^205348547641 is an apocalyptic number.

It is an amenable number.

205348547641 is a deficient number, since it is larger than the sum of its proper divisors (1).

205348547641 is an equidigital number, since it uses as much as digits as its factorization.

205348547641 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3225600, while the sum is 49.

The spelling of 205348547641 in words is "two hundred five billion, three hundred forty-eight million, five hundred forty-seven thousand, six hundred forty-one".